Arm swim fin



FIG. 1 is a perspective view of an arm swim fin, showing my new design;

FIG. 2 is a top-plan view thereof;

FIG. 3 is a bottom-plan view thereof;

FIG. 4 is a rear elevational view thereof, the front elevational viewbeing a mirror image of that shown; and

FIG. 5 is a side-elevational view thereof.

The ornamental design for an arm swim fin, as shown and described.